Public water system · MD1171124
ActiveShell One Stop
At a glance
Shell One Stop (PWSID MD1171124) is an active transient non-community water system in Queen Anne's County, Maryland. It reports serving 180 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is health-based, and the most recent began in July 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
180
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Shell One Stop compare with other water systems in Queen Anne's County?
By EPA's size categories, Shell One Stop is a very small system (500 people or fewer). Queen Anne's County has 92 active public water systems. Its population served is about half of the county average of 331 people per system, and accounts for 0.6% of the 30,426 people reported by systems filed under the county. Across Maryland, the 2,992 active systems average 1,947 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Shell One Stop is about 25% above that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Maryland has 2,079 active transient non-community water systems, 69% of the state's 2,992 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,870 Maryland systems (96%) list groundwater as their primary source.
Who owns and regulates Shell One Stop?
EPA lists Shell One Stop as privately owned. The MD state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 70 of the 92 active systems in Queen Anne's County (76%) are also privately owned.
Does Shell One Stop have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in July 2011. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2011-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
The one violation in EPA's records.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Shell One Stop: frequently asked questions
Who runs Shell One Stop?
Shell One Stop (PWSID MD1171124) is a transient non-community water system privately owned. It is regulated by the MD state drinking water program.
How many people does Shell One Stop serve?
Shell One Stop reports serving 180 people through 1 service connection in Queen Anne's County, Maryland.
Where does Shell One Stop get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Shell One Stop have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in July 2011. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Shell One Stop's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list one violation for this system; it is health-based, and the most recent began in July 2011. For current results, consult EPA ECHO, or the MD state drinking water program.
Where can I find Shell One Stop's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Shell One Stop is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Queen Anne's County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Stevensville | Queen Anne's | 9,155 | Community | Groundwater |
| Town of Centreville | Queen Anne's | 3,322 | Community | Groundwater |
| Bayside-Queenslanding | Queen Anne's | 1,030 | Community | Groundwater |
| Chesapeake College | Queen Anne's | 1,001 | Non-transient non-community | Groundwater |
| Prospect Bay | Queen Anne's | 913 | Community | Groundwater |
| Town of Queenstown | Queen Anne's | 705 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Shell One Stop, PWSID MD1171124, Maryland”, https://aquacensus.com/water-systems/maryland/shell-one-stop-md1171124 (data as of October 1, 2026).